[SANOG] Weekly Global IPv4 Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Oct 22 18:03:04 UTC 2021
This is an automated weekly mailing describing the state of the Internet
Global IPv4 Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.
Daily listings are sent to bgp-stats at lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
Global IPv4 Routing Table Report 04:00 +10GMT Sat 23 Oct, 2021
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 867554
Prefixes after maximum aggregation (per Origin AS): 329940
Deaggregation factor: 2.63
Unique aggregates announced (without unneeded subnets): 419703
Total ASes present in the Internet Routing Table: 72150
Prefixes per ASN: 12.02
Origin-only ASes present in the Internet Routing Table: 61971
Origin ASes announcing only one prefix: 25553
Transit ASes present in the Internet Routing Table: 10179
Transit-only ASes present in the Internet Routing Table: 348
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 53
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 920
Number of instances of unregistered ASNs: 924
Number of 32-bit ASNs allocated by the RIRs: 37600
Number of 32-bit ASNs visible in the Routing Table: 31219
Prefixes from 32-bit ASNs in the Routing Table: 145632
Number of bogon 32-bit ASNs visible in the Routing Table: 22
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 417
Number of addresses announced to Internet: 3071270144
Equivalent to 183 /8s, 15 /16s and 221 /24s
Percentage of available address space announced: 83.0
Percentage of allocated address space announced: 83.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.5
Total number of prefixes smaller than registry allocations: 288266
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 231716
Total APNIC prefixes after maximum aggregation: 66510
APNIC Deaggregation factor: 3.48
Prefixes being announced from the APNIC address blocks: 227141
Unique aggregates announced from the APNIC address blocks: 92521
APNIC Region origin ASes present in the Internet Routing Table: 12039
APNIC Prefixes per ASN: 18.87
APNIC Region origin ASes announcing only one prefix: 3422
APNIC Region transit ASes present in the Internet Routing Table: 1700
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 37
Number of APNIC region 32-bit ASNs visible in the Routing Table: 7211
Number of APNIC addresses announced to Internet: 773052288
Equivalent to 46 /8s, 19 /16s and 215 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 254633
Total ARIN prefixes after maximum aggregation: 117512
ARIN Deaggregation factor: 2.17
Prefixes being announced from the ARIN address blocks: 254543
Unique aggregates announced from the ARIN address blocks: 122065
ARIN Region origin ASes present in the Internet Routing Table: 18927
ARIN Prefixes per ASN: 13.45
ARIN Region origin ASes announcing only one prefix: 6857
ARIN Region transit ASes present in the Internet Routing Table: 1949
Average ARIN Region AS path length visible: 3.8
Max ARIN Region AS path length visible: 28
Number of ARIN region 32-bit ASNs visible in the Routing Table: 4171
Number of ARIN addresses announced to Internet: 1301368320
Equivalent to 77 /8s, 145 /16s and 78 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8,
66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8,
73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8,
99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 241557
Total RIPE prefixes after maximum aggregation: 113212
RIPE Deaggregation factor: 2.13
Prefixes being announced from the RIPE address blocks: 237828
Unique aggregates announced from the RIPE address blocks: 146133
RIPE Region origin ASes present in the Internet Routing Table: 28094
RIPE Prefixes per ASN: 8.47
RIPE Region origin ASes announcing only one prefix: 12107
RIPE Region transit ASes present in the Internet Routing Table: 3918
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 27
Number of RIPE region 32-bit ASNs visible in the Routing Table: 10484
Number of RIPE addresses announced to Internet: 712184704
Equivalent to 42 /8s, 115 /16s and 19 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-213403
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 112033
Total LACNIC prefixes after maximum aggregation: 26788
LACNIC Deaggregation factor: 4.18
Prefixes being announced from the LACNIC address blocks: 112908
Unique aggregates announced from the LACNIC address blocks: 47478
LACNIC Region origin ASes present in the Internet Routing Table: 10786
LACNIC Prefixes per ASN: 10.47
LACNIC Region origin ASes announcing only one prefix: 2614
LACNIC Region transit ASes present in the Internet Routing Table: 2119
Average LACNIC Region AS path length visible: 4.9
Max LACNIC Region AS path length visible: 53
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8455
Number of LACNIC addresses announced to Internet: 176483328
Equivalent to 10 /8s, 132 /16s and 236 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-272796 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 26695
Total AfriNIC prefixes after maximum aggregation: 5223
AfriNIC Deaggregation factor: 5.11
Prefixes being announced from the AfriNIC address blocks: 34717
Unique aggregates announced from the AfriNIC address blocks: 11144
AfriNIC Region origin ASes present in the Internet Routing Table: 1569
AfriNIC Prefixes per ASN: 22.13
AfriNIC Region origin ASes announcing only one prefix: 553
AfriNIC Region transit ASes present in the Internet Routing Table: 311
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 42
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 898
Number of AfriNIC addresses announced to Internet: 107911424
Equivalent to 6 /8s, 110 /16s and 153 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
9808 8188 9000 57 CMNET-GD Guangdong Mobile Communication
7545 5839 787 682 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4661 4192 74 ERX-CERNET-BKB China Education and Rese
7713 3507 1023 57 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3056 1896 55 VNPT-AS-VN VNPT Corp, VN
7552 2969 1330 19 VIETEL-AS-AP Viettel Group, VN
4766 2507 11119 578 KIXS-AS-KR Korea Telecom, KR
9498 2163 472 237 BBIL-AP BHARTI Airtel Ltd., IN
4755 2126 429 203 TATACOMM-AS TATA Communications formerl
45090 2126 1198 75 CNNIC-TENCENT-NET-AP Shenzhen Tencent C
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 5766 9981 2525 AMAZON-02, US
11492 4672 309 782 CABLEONE, US
22773 4085 3057 378 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3951 264 30 VIASAT-SP-BACKBONE, US
16625 3638 1882 2536 AKAMAI-AS, US
6327 3371 1318 69 SHAW, CA
749 2666 50722 1922 DNIC-AS-00749, US
30036 2584 373 195 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2527 5028 447 CENTURYLINK-US-LEGACY-QWEST, US
20115 2241 3032 504 CHARTER-20115, US
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
12479 6861 1726 143 UNI2-AS, ES
20940 3892 3348 214 AKAMAI-ASN1, NL
39891 3271 187 23 ALJAWWALSTC-AS, SA
8551 3270 378 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
12389 2929 2283 898 ROSTELECOM-AS, RU
9009 2508 259 1323 M247, GB
34984 2241 358 603 TELLCOM-AS, TR
58224 1692 902 581 TCI, IR
61317 1665 223 927 ASDETUK www.heficed.com, GB
13188 1606 100 27 TRIOLAN, UA
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 8902 3461 572 Uninet S.A. de C.V., MX
10620 3413 519 716 Telmex Colombia S.A., CO
11830 2498 369 62 Instituto Costarricense de Electricidad
13999 1641 297 457 Mega Cable, S.A. de C.V., MX
6503 1523 359 473 Axtel, S.A.B. de C.V., MX
28573 1444 2309 253 CLARO S.A., BR
3816 1240 651 153 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
26615 1126 2351 135 TIM SA, BR
6147 1083 369 22 Telefonica del Peru S.A.A., PE
11172 956 111 69 Alestra, S. de R.L. de C.V., MX
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 1636 393 21 LINKdotNET-AS, EG
24835 1551 503 32 RAYA-AS, EG
36992 1287 1418 270 ETISALAT-MISR, EG
36903 1183 537 110 MT-MPLS, MA
29571 813 68 11 ORANGE-COTE-IVOIRE, CI
36935 643 523 44 Vodafone-, EG
6713 611 1863 34 IAM-AS, MA
15399 514 50 31 WANANCHI-, KE
37342 470 32 1 MOVITEL, MZ
2018 343 319 73 TENET-1, ZA
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 8902 3461 572 Uninet S.A. de C.V., MX
9808 8188 9000 57 CMNET-GD Guangdong Mobile Communication
12479 6861 1726 143 UNI2-AS, ES
7545 5839 787 682 TPG-INTERNET-AP TPG Telecom Limited, AU
16509 5766 9981 2525 AMAZON-02, US
11492 4672 309 782 CABLEONE, US
4538 4661 4192 74 ERX-CERNET-BKB China Education and Rese
22773 4085 3057 378 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3951 264 30 VIASAT-SP-BACKBONE, US
20940 3892 3348 214 AKAMAI-ASN1, NL
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 8188 8131 CMNET-GD Guangdong Mobile Communication Co.Ltd.
12479 6861 6718 UNI2-AS, ES
7545 5839 5157 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4661 4587 ERX-CERNET-BKB China Education and Research Net
7155 3951 3921 VIASAT-SP-BACKBONE, US
11492 4672 3890 CABLEONE, US
22773 4085 3707 ASN-CXA-ALL-CCI-22773-RDC, US
20940 3892 3678 AKAMAI-ASN1, NL
7713 3507 3450 TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID
6327 3371 3302 SHAW, CA
Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
398418 UNALLOCATED 8.2.200.0/24 2914 NTT-COMMUNICATIONS-2914, US
46990 UNALLOCATED 8.5.242.0/23 3356 LEVEL3, US
62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US
393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US
18604 UNALLOCATED 8.25.204.0/24 3356 LEVEL3, US
394936 UNALLOCATED 8.33.224.0/24 174 COGENT-174, US
54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US
23061 UNALLOCATED 8.39.119.0/24 3356 LEVEL3, US
1782 UNALLOCATED 8.42.19.0/24 46887 LIGHTOWER, US
395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 6939 HURRICANE, US
Complete listing at http://thyme.rand.apnic.net/current/data-dsua
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
23.132.208.0/24 Origin: 7850 CITYLINKFIBER, US
23.132.208.0/24 Transit: 15164 UPNLLC, US
23.141.0.0/24 Origin: 395350 UNASSIGNED
23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US
27.100.7.0/24 Origin: 56096 UNASSIGNED
27.100.7.0/24 Transit: 45455 TH-2S1N-AP Two S One N Co Ltd, Internet
41.57.124.0/22 Origin: 37442 UNASSIGNED
41.57.124.0/22 Transit: 174 COGENT-174, US
41.57.124.0/23 Origin: 37442 UNASSIGNED
41.57.124.0/23 Transit: 37204 TELONE, ZW
Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:16 /9:13 /10:41 /11:99 /12:300
/13:596 /14:1214 /15:2045 /16:13601 /17:8330 /18:14072
/19:25507 /20:42973 /21:50849 /22:107093 /23:93296 /24:506056
/25:1453 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
12479 5822 6861 UNI2-AS, ES
11492 3611 4672 CABLEONE, US
8151 3290 8902 Uninet S.A. de C.V., MX
6327 3179 3371 SHAW, CA
7155 3041 3951 VIASAT-SP-BACKBONE, US
22773 3014 4085 ASN-CXA-ALL-CCI-22773-RDC, US
39891 2807 3271 ALJAWWALSTC-AS, SA
8551 2735 3270 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
30036 2238 2584 MEDIACOM-ENTERPRISE-BUSINESS, US
11830 1931 2498 Instituto Costarricense de Electricidad y Telec
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1921 2:1051 3:145 4:19 5:3658 6:85
7:5 8:1552 9:1 11:172 12:1715 13:400
14:2291 15:118 16:24 17:372 18:121 20:126
21:4 22:188 23:5235 24:2415 25:2 27:2517
29:19 31:2365 32:106 34:1 35:47 36:1730
37:3906 38:2322 39:608 40:151 41:3868 42:1039
43:2064 44:290 45:15532 46:3655 47:320 48:1
49:1674 50:1839 51:100 52:1294 54:279 55:735
56:4 57:55 58:1747 59:1177 60:932 61:2336
62:2317 63:1959 64:5370 65:2359 66:4929 67:2864
68:1165 69:4112 70:1355 71:678 72:3160 74:2627
75:1495 76:698 77:2042 78:1735 79:2569 80:1855
81:1515 82:1354 83:1165 84:1292 85:2823 86:716
87:1867 88:980 89:3067 90:505 91:7417 92:1834
93:2565 94:3132 95:3563 96:1297 97:347 98:977
99:953 100:75 101:1039 102:1724 103:27215 104:4052
105:436 106:804 107:2385 108:733 109:3915 110:2042
111:3122 112:1956 113:1406 114:1504 115:1937 116:1889
117:2344 118:2327 119:1884 120:1592 121:1088 122:2537
123:2166 124:1596 125:2049 128:1400 129:1159 130:903
131:2062 132:743 133:364 134:1889 135:319 136:787
137:858 138:2410 139:1202 140:833 141:1290 142:1197
143:1380 144:1274 145:326 146:1564 147:1466 148:2218
149:1500 150:834 151:1089 152:1660 153:434 154:3141
155:1370 156:1766 157:1188 158:995 159:2041 160:2345
161:1246 162:3351 163:1105 164:1649 165:1461 166:593
167:1661 168:3650 169:688 170:4334 171:783 172:2763
173:2975 174:1003 175:1124 176:3349 177:4544 178:2999
179:1922 180:2256 181:2688 182:3121 183:2013 184:2413
185:18952 186:4208 187:3206 188:3459 189:2910 190:8651
191:1313 192:10851 193:8401 194:6842 195:4874 196:2880
197:2165 198:6036 199:5924 200:7361 201:5491 202:10489
203:10031 204:4517 205:3380 206:3799 207:3369 208:3999
209:4738 210:4200 211:2429 212:3756 213:3382 214:1167
215:62 216:6370 217:2619 218:1224 219:648 220:1949
221:976 222:844 223:2078
End of report
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